| APA | SPRD. (2012, February 16). In Acronym Geek. Retrieved 11:29, February 16, 2012, from http://www.acronymgeek.com/SPRD |
| MLA | "SPRD." Acronym Geek. (2012). Acronym Geek. 16 Feb 2012 <http://www.acronymgeek.com/SPRD>. |
| MHRA | 'SPRD', Acronym Geek, 16 February 2012, <http://www.acronymgeek.com/SPRD> [accessed 16 February 2012] |
| Chicago | "SPRD", http://www.acronymgeek.com/SPRD (accessed February 16, 2012). |
| CBE/CSE | SPRD [Internet]. Acronym Geek; 2012 Feb 16 [cited 2012 Feb 16]. Available from: http://www.acronymgeek.com/SPRD. |
| Bluebook | SPRD, http://www.acronymgeek.com/SPRD (last visited February 16, 2012). |
| Bluebook: Harvard JOLT | See Acronym Geek, SPRD, http://www.acronymgeek.com/SPRD (optional description here) (as of Feb. 16, 2012, 11:29). |
| AMA | SPRD. Acronym Geek. February 16, 2012, 11:29. Available at: http://www.acronymgeek.com/SPRD. Accessed February 16, 2012, 11:29. |